Table 1 Comparison of clinical, pathological and imaging parameters between training and validation groups

Gender

0.471^a

0.062^a

 Male

53

78

17

34

 Female

10

20

11

8

Age (years)

58.00 (52.00, 66.00)

62.00 (56.00, 69.00)

0.031^b

61.00 (57.00, 65.75)

63.00 (58.00, 67.25)

0.387^b

Tumor location

0.113^c

0.079^c

 Fundus

42

60

18

26

 Body

10

27

2

11

 Antrum

11

9

7

4

 ≥ 2/3

0

2

1

1

Borrmann

0.031^c

0.907^c

 I

3

5

2

4

 II

50

60

22

29

 III

10

33

4

8

 IV

0

0

0

1

Clinical T stage

0.688^a

0.492^c

 2

6

7

4

3

 3

43

64

16

29

 ≥ 4a

14

27

8

10

Clinical N stage

0.437^a

0.411^a

 N0

27

36

8

16

 N + 

36

62

20

26

Thickness (mm)

13.82 (9.88, 16.16)

13.02 (10.08, 16.47)

0.609^b

13.78 (11.03, 16.33)

13.16 (10.48, 16.87)

0.971^b

Histopathology

0.091^a

0.552^a

 Adenocarcinoma

55

75

23

32

 Non-adenocarcinoma

8

23

5

10

Differentiation

0.102^c

0.146^a

 Well

1

0

0

0

 Moderate

38

48

12

11

 Poor

24

50

16

31

Lauren

0.001^a

0.117^a

 Intestinal type

44

41

17

15

 Mixed type

6

27

6

16

 Diffuse type

13

30

5

11

CEA

0.069^a

0.188^a

 Normal

49

63

18

33

 Elevated

14

35

10

9

CA125

0.942

0.383

 Normal

57

89

25

40

 Elevated

6

9

3

2

CA199

0.657

0.714

 Normal

51

82

23

33

 Elevated

12

16

5

9